HVAC Systems and Applications!  - Resources, Tools and Basic Information for Engineering and Design.
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HVAC Systems and Applications! - Resources, Tools and Basic Information for Engineering and Design.

Belt driven Fans - Motor and Fan Speed

Speed of Fan versus Speed of Motor with Belt Drives

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Belt driven fans are common in heating, ventilation and cooling systems. The speed of a belt driven fan versus the speed of the motor can be calculated as

dF nF = dM nM

where

dF = pulley diameter fan (inch, mm)

nF = speed of fan (rpm - rounds per minute)

dM = pulley diameter motor (inch, mm)

nM = speed of fan (rpm - rounds per minute)

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